Secondly, I don't actually think that follows in a cooperative game the same way it does in a competitive one. You're more likely to see accommodations there with things like character difficulty ratings, or being pointed to established, known strategies whilst one gets familiar with the mechanics. Sometimes you even see cooperative games themselves suggested as a solution for divergent player skill, to avoid the negative experiences competition can bring. Cooperative play has its own problems (i.e. "quarterbacking" where a more experienced player effectively makes choices for a less experienced player), but I don't think this kind of variant is common in play when everyone is driving at a shared goal.